The procedure for designating and establishing Marine Protected Areas (MPA) has changed profoundly since the 1990s, as a consequence of global changes and new dictates related to biodiversity conservation and sustainable development. Far beyond protection of flagship species such as marine turtles and large marine mammals, the goal is now to conserve and even increase the services associated with coastal ecosystems to the benefit of all stakeholders. References to community management of resources, territorial solidarity, or environmental justice have become common. The political processes undertaken have nevertheless taken a range of different trajectories, since the stakeholders (private, public, NGOs, local collectives) have different interests; their standards and rules are often incompatible; the efficacy of the negotiation process is debatable. In this article, after questioning the legitimacy of MPA (to what extent are they useful tools ? —in responding to what aims?), the difficulties of putting into practice this new paradigm of participative governance is analysed and illustrated using three case studies of coastal Senegalese MPAs and the consequences of local intervention: the Saint Louis MPA, the Bamboung Community-Managed MPA in the Saloum Delta, and the Mangagoulack ICCA (Indigenous and Community Conserved Area) in Casamance. In conclusion, the principal lessons and perspectives of these approaches are presented
